If the energy of a photon is 1.33 x 10^-10
Joules what is its frequency

Explanation:

Multiply the photon energy value by Avogadro's number to find the energy of one mole of photons. Avogadro's number is the quantity of the number of molecules or particles in one mole of a particular substance and is equal to 6.02 x 10^23

the part of the wave he is travelling on is the crest

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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